| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. D Byrne vs I Romanenko |
| 1-0 | 42 | 1955 | 56th US Open | A99 Dutch, Ilyin-Genevsky Variation with b3 |
| 27. W Stevens vs I Romanenko |
| 0-1 | 36 | 1956 | 57th US Open | C59 Two Knights |
| 28. I Romanenko vs W M Byland |
| ½-½ | 28 | 1956 | 57th US Open | B14 Caro-Kann, Panov-Botvinnik Attack |
| 29. J E Warren vs I Romanenko |
 | 0-1 | 40 | 1956 | 57th US Open | A97 Dutch, Ilyin-Genevsky |
| 30. I Romanenko vs C C Crittenden |
| ½-½ | 45 | 1956 | 57th US Open | C84 Ruy Lopez, Closed |
| 31. B Garfinkel vs I Romanenko |
| 0-1 | 42 | 1956 | 57th US Open | A91 Dutch Defense |
| 32. I Romanenko vs E Mednis |
| 0-1 | 31 | 1956 | 57th US Open | B70 Sicilian, Dragon Variation |
| 33. P Lapiken vs I Romanenko |
| 1-0 | 50 | 1956 | 57th US Open | C86 Ruy Lopez, Worrall Attack |
| 34. I Romanenko vs A M De La Torre |
| 1-0 | 20 | 1956 | 57th US Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 35. E McCormick vs I Romanenko |
| 1-0 | 40 | 1956 | 57th US Open | C25 Vienna |
| 36. O Popovych vs I Romanenko |
| 1-0 | 26 | 1956 | 57th US Open | B03 Alekhine's Defense |
| 37. I Romanenko vs C F Tears |
| 1-0 | 61 | 1956 | 57th US Open | C84 Ruy Lopez, Closed |
| 38. B Razo vs I Romanenko |
| 0-1 | 44 | 1971 | 72nd US Open | A01 Nimzovich-Larsen Attack |
| 39. L Christiansen vs I Romanenko |
| 1-0 | 56 | 1971 | 72nd US Open | A30 English, Symmetrical |
| 40. I Romanenko vs S Hohensee |
| 1-0 | 34 | 1971 | 72nd US Open | C70 Ruy Lopez |
| 41. K Commons vs I Romanenko |
| 1-0 | 42 | 1971 | 72nd US Open | A96 Dutch, Classical Variation |
| 42. I Romanenko vs Reshevsky |
| 0-1 | 51 | 1974 | 75th US Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 43. A Ortega vs I Romanenko |
| 1-0 | 62 | 1991 | New York Open | C89 Ruy Lopez, Marshall |
| 44. F Alvarez vs I Romanenko |
| ½-½ | 59 | 1993 | New York Open | C59 Two Knights |
| 45. I Romanenko vs W Kelleher |
| 0-1 | 33 | 1993 | New York Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 46. I Romanenko vs A B Carlin |
| 0-1 | 35 | 1993 | New York Open | B07 Pirc |
| 47. D Floreen vs I Romanenko |
| 1-0 | 39 | 1993 | New York Open | A80 Dutch |
| 48. J B Carr vs I Romanenko |
| 1-0 | 32 | 1993 | New York Open | A40 Queen's Pawn Game |
| 49. I Romanenko vs M Reverby |
| 0-1 | 44 | 1993 | New York Open | C05 French, Tarrasch |
| 50. R Zimmer vs I Romanenko |
| 1-0 | 12 | 1993 | New York Open | C02 French, Advance |
Kibitzing
